What Does This Below Case History Report Indicate?

My father is 78 years of age, suffers from dimentia as doctors say, case history reads:Presented with history of behavior, dysasthesia & mood changes for pat 2 years in the form of paresthesiac, dysasthesia with history of visual & audotary , halluucinations without any change in memory disturbances. patient has developed intermittent freezing while walking, slowing of gait. patient is able to walk with support goes to toilet, takes bath eats by himself. patient had suffered compressed disc seven years ago and is almost athome since then.